Public Comment Form

Commenting open: July 30, 2024 12:00AM CT - August 29, 2024 11:59PM CT.

Dem-Con HZI Bioenergy (Shakopee) - Air Permit

We invite you to comment on the draft air quality permit for Dem-Con HZI Bioenergy in Shakopee.


Dem-Con HZI BioEnergy will build a new facility in Shakopee that will produce renewable natural gas from anerobic digestion of organic waste, compress the gas, and send it to a pipeline. The material left over from the digestion process will then go through a pyrolysis process to create biochar. 


The draft air permit authorizes construction and operation of the facility. The draft permit limits particulate matter, sulfur dioxide, nitrogen oxide, and several hazardous air pollutant emissions from pyrolysis and combustion of the syngas created from pyrolysis. The draft permit also requires performance testing and continuous monitoring for several pollutants from the pyrolysis combustion process. Emissions from the pyrolysis process will be controlled by a cyclone, activated carbon injection and fabric filter system, and liquid scrubber before venting to the atmosphere. A flare will control emissions from the anerobic digesters when they create gas not suitable for the pipeline during startup, shutdowns, or malfunctions. 


An air quality operating permit is required for certain existing facilities or the construction of new facilities that have the potential to emit a significant level of any regulated pollutant. The permit includes all requirements for operation and procedures, applicable rules, emission standards, monitoring, recordkeeping, and reporting. If additional conditions change and modifications are necessary, the MPCA may review and amend the permit.



Contact Information

*Indicates Required Fields

Submitted by Value

First Name *

Last Name *

Address (Required)

City (Required)

State

ZIP (Required)

Email

Your Comment


Thank you for providing feedback on this project. We value your comments and will use them to assess this project further.


In your comments, please state your interest in the permit application or the draft permit; the explicit actions you wish the MPCA to take, including specific references to the section of the draft permit you believe should be changed; and the reasons supporting your position, stated with sufficient specificity as to allow the MPCA to investigate the merits of the position.


If you want to submit a letter, you can upload the letter on this website or submit it via US Mail to the following address:


Minnesota Pollution Control Agency
c/o Andrea Behrendt
520 Lafayette Road
Saint Paul, MN 55155

*Uploading a file is optional*

You may attach up to five 20 MB files to accompany your submission. Allowed formats are pdf, jpg, jpeg, png, txt, gif, doc, docx, xlsx, xls. If you experience technical difficulties submitting your comment please contact the person listed at the bottom of this page.


Thank you for subscribing to the Dem-Con HZI Bioenergy (Shakopee) - Air Permit mailing list.